Metal Plate Tutorial
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Step 5:
Lower the opacity of the Metal brush layer to 27%. Make a copy of the Metal brush layer, do so by right-clicking the layer in the layers pallette and choosing Duplicate layer. Make sure you selected the copied layer, then sharpen the layer, Filter > Sharpen > Sharpen. This applies the sharpen filter once, press CTRL+F three times to apply the filter 3 times more. Change the opacity of this layer to 52%.
Step 6:
Make a new layer called "Shadow", Again select the brush tool and take a default chalk brush, brush size 100px. Then make a nice shadow with this brush like in the picture below, it looks kinda dull now but we'll fix it right away by changing the blend mode and opacity.

So change the blend mode of this shadow layer to Overlay, and the opacity to 65%.
Step 7:
Open up this texture in photoshop, and drag it onto your metal plate canvas like below. Note: Make sure it's on top of everything else, and rename this layer to "Texture".

Set the blend mode to Lighten.
Step 8:
Add a layer mask to the texture layer by clicking the following icon in the layers pallette.

Select your brush tool with a chalk brush and opacity 26%. Set the foreground color to black and brush over the big blood spatter so some of the texture gets invisible. We used opacity so not all the texture gets invisible with just one stroke, this way you can fine-tune it.
The reason we used a layer mask is the following. With a layer mask you can temporary delete parts of a layer without removing them completely. When you brush with black inside a layer mask that part you've brushed won't be shown, when you want it to be visible again just paint it over with white.

select the texture layer, and go to Image > Adjustments > Desaturate, this will make the layer black and white only.
Step 9:
Duplicate the Texture layer from the previous step. Give this duplicated layer a Color dodge blend mode and opacity of 40%.

Wow! That was a short step